O Browse the manual glossary A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Obligatory Reinsurance Obligatory Treaty Occupational Disease Occurrence Occurrence Coverage Occurrence Policy Ocean Marine Insurance Offset (Setoff) Offset Clause Open Competition States Operating Expenses Options Ordinance or Law Coverage Ordinary Life Insurance Original Equipment Manufacturer Parts (OEM) Outstanding Loss Reserve See Case Reserve. Outstanding Surplus Account Over-The-Counter (OTC) Over-Line Overriding Commission Oversight See Errors and Omissions Clause.